Julius berbecker



(No Model.)

J. BERBEOKER.

SHEET METAL KNOB.

No. 399,476. Patented Mar. 12. 1889.

WITNESSES.- I GLWMNW w/ UNITED "STATES JULIUS BERBEFKER,

PATENT OFFICE,

0F NEAV YORK, N. Y,

SHE-ET-METAL KNOB.

SPECIFICATION forming part of Letters Patent No. 399,476, dated March 12, 1889.

application filed mils, 1888. Serial Ho. 273,925. (Ho model.)

To all whom it may concern:

Be it known that l, JULIUS BERBECKER, of the city, county, and State of New York,have invented certain new and useful Improvethe following is a specification.

This invention relates to certain improvements in sheet-metal knobs, by which the same can be readily attached. to a drawer or other object and retained in position thereon without being liable to turn on their axes. The invention consists of a sheet-metal knob the base of which is re-enforced by a plate having a central serew-tap and prongs bent up from and made integral with said plate, said prongs being passed through openings of said base and through openings of a washer having a centraldepression and a central opening for the fastening-screw that engages the central screw-tap of the i'e-enforcing plate.

In the accompanying drawings, Figure 1 represents a vertical longitudinal section of m vimproved sheet-metal knob, showing it attached to a door or other object. Fig. 2 is a front view of the washer for the knob, and Fig. 3 is a detail view of the re-enforcing. plate or disk for the base of the knob.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A representsthe face-plate, l; the shank, and the base, of my improved sheet-metal knob. 'lhe shank B and base are spun orst'ruck-up from one piece otsheetmetal. t h t pase (.being re-enforced by a metal diskor plate, I), whiehis provided at the center with a screw-tap, d, into which the fastening-screw Eiof'the knob is screwed after the screw has passed through the wood of the drawer orother object, as shown in Fig. l. The metal re-cnforcing disk I) is provided with one or more prongs, d, that are bent up at right angles to the plate and made integral with the sanie'bybeing struck up from the body of the .sam'c. The prongs d are passed-through o i'enings of't'he base C of the knoband through openingsj" of awasher, F, which latter is provided with a depressed middle portion,f, for the base ot' theknob.

l The openings f' of the washer register with ithe openings in the bascot the knob and the bent-up prongs. When the knob is applied to a door, drawer, or other object, the fastening-screw is passed through a central opening, f, of the washer F and screwed E into the screw-tap in the base of the knob, whereby the prongs are drawn into the wood. The knob is thereby rigidly retained in posi- 1 tion' and prevented from getting detached Lfr'om the fastening-screw, while, the axial 6o turning of the knob is effectually prevented i and the same held firmly in position on the object to which it is attached. l g i I am aware that east-metal pulls and knobs have been made heretofore in which the base is proided withprojections or prongs castintegral therewith. I am also aware that sheet-metal knobs formed with spurs 01 prongsprojectinglongitudinally from thebase 1 have been made heretofore; but I am not aware that a sheet-metal door-knob which is provided with prongs or projm-tions at its base, that are made integral with a re-enforcing plate or disk of the base and passed through openings of the same and through corresponding openings of a washer that extends around the base of the knob, has been made before my invention thereof. Having thus described m y invention, Iclaim as newand desire to secure by Letters Patent- The combination, with a sheet-metal knob thebase of which is provided with a re-euforcing plate having a central screw-tap and one or more bent-up prongs made integral with said plate, of a washer extending around thebasc of the knob, ha-vingholcs registering with. said prongs, and a fastening-screttv passing through said washer and engaging the screw-tap of the rc-cnt'orcing plate, substantially as set forth.

In testimony that I claim the foregoing as my invention 1 have signed my name in presence of twosubscribing witnesses.

Jl'Lll'S BERBECKER.

:Witnesses: PAUL GOEIEL,

Join: A. STRALEY. 

